- Nightmare Fuel: Zero in both forms. The first one is a giant white Elebit with blurry lines and creepy eyes, and the second is a Humongous Mecha with glowing red eyes.
- Retroactive Recognition: The lead artist, Akihito Tsukushi, would later go on to create Made in Abyss.
- The Woobie: Kai is so being treated as The Unfavorite compared to the sheer amount of Elebits even though he has no siblings.
